<?php
/**
 * ---------------------------------------------------------------------
 * GLPI - Gestionnaire Libre de Parc Informatique
 * Copyright (C) 2015-2020 Teclib' and contributors.
 *
 * http://glpi-project.org
 *
 * based on GLPI - Gestionnaire Libre de Parc Informatique
 * Copyright (C) 2003-2014 by the INDEPNET Development Team.
 *
 * ---------------------------------------------------------------------
 *
 * LICENSE
 *
 * This file is part of GLPI.
 *
 * GLPI is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * GLPI is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GLPI. If not, see <http://www.gnu.org/licenses/>.
 * ---------------------------------------------------------------------
 */

// Include plugin if it is a plugin table
if (!strstr($_GET['itemtype'], "Plugin")) {
   $AJAX_INCLUDE = 1;
}
include ('../inc/includes.php');
header("Content-Type: application/json; charset=UTF-8");
Html::header_nocache();

Session::checkLoginUser();

// Security
if (!isset($_GET['itemtype']) || !($item = getItemForItemtype($_GET['itemtype']))) {
   exit();
}

$item->getEmpty();
$table = $item->getTable();
// Security
if (!isset($item->fields[$_GET['field']]) || !$item->canView()) {
   exit();
}

// Security : check whitelist
$field_so = $item->getSearchOptionByField('field', $_GET['field'], $item->getTable());
$can_autocomplete = array_key_exists('autocomplete', $field_so) && $field_so['autocomplete'];
if (!$can_autocomplete) {
   exit();
}

$entity = [];
if (isset($_GET['entity_restrict']) && $_GET['entity_restrict']>=0) {
   if ($item->isEntityAssign()) {
      $entity['entities_id'] = $_GET['entity_restrict'];
   }
}

if (isset($_GET['user_restrict']) && $_GET['user_restrict']>0) {
   $entity['users_id'] = $_GET['user_restrict'];
}

$iterator = $DB->request([
   'SELECT'          => $_GET['field'],
   'DISTINCT'        => true,
   'FROM'            => $table,
   'WHERE'           => [
      [$_GET['field'] => ['LIKE', $_GET['term'] . '%']],
      [$_GET['field'] => ['<>', $_GET['term']]]
   ] + $entity,
   'ORDER'           => $_GET['field']
]);

$values = [];

if (count($iterator)) {
   while ($data = $iterator->next()) {
      $values[] = Html::entity_decode_deep($data[$_GET['field']]);
   }
}

if (count($values)) {
   echo json_encode($values);
}